Results 41 to 50 of about 297,302 (335)

In-vitro performance and fracture strength of thin monolithic zirconia crowns

The Journal of Advanced Prosthodontics, 2018
PURPOSE All-ceramic restorations required extensive tooth preparation. The purpose of this in vitro study was to investigate a minimally invasive preparation and thickness of monolithic zirconia crowns, which would provide sufficient mechanical endurance
P. Weigl, A. Sander, Yanyun Wu, R. Felber, H. Lauer, M. Rosentritt   +5 more
semanticscholar   +1 more source

Comparative in vitro evaluation of CAD/CAM vs conventional provisional crowns

Journal of Applied Oral Science, 2016
Objective This study compared the marginal gap, internal fit, fracture strength, and mode of fracture of CAD/CAM provisional crowns with that of direct provisional crowns.
A. O. Abdullah, E. Tsitrou, S. Pollington   +2 more
semanticscholar   +1 more source

Evaluation of presence of proximal contacts on recently inserted posterior crowns in different health sectors in Riyadh City, Saudi Arabia

Journal of Family Medicine and Primary Care, 2019
Background: For the successful outcome of the rehabilitation of the teeth with crown, the proximal contact points play a significant role hence the aim of the present study was to evaluate the presence of proximal contacts on recently inserted crowns in ...
Ahmad D Almalki, Mohammad A Al-Rafee
doaj   +1 more source

Comparison of the Marginal Fit of Heat Pressed Crowns Fabricated With 3D Printed and Conventional Methods

مجله دانشکده دندانپزشکی اصفهان, 2022
Marginal adaptation is one of the key factors in the success of dental crowns. It is necessary to identify marginal adaptation in order to determine the spacing and prevent the onset of diseases. This study sought to use
Fereshteh Seyedeh, Reza Darabi, Monireh Nili, Pooya Ashtijoo   +3 more
doaj   +1 more source

Marginal fit and fracture resistance of CAD/CAM glass ceramic occlusal veneers with different preparation designs

BMC Oral Health
Background To assess marginal fit and fracture resistance of CAD/CAM glass ceramic occlusal veneers with different preparation designs. Methods First premolar typodont maxillary was chosen. Standard IPS E.max CAD occlusal veneer preparations were carried
Suad M. Hassan, Ayat G. Montaser, Zinab R. El Sharkawy, Nevin A. Gad, Shaimaa A. Alrafee, Zahraa A. Gabal   +5 more
doaj   +1 more source

Effect of three veneering techniques on fracture resistance and marginal adaptation of zirconia-based crowns

Caspian journal of dental research, 2020
Introduction: The aim of this study was to evaluate the fracture resistance (FR) of zirconia-based crowns veneered with different methods and to assess marginal gap before and after veneering.
Farshid Amiri Daneshvar, Abdolhamiid Alhavaz, Ghazaleh Ahmadizenouz, Ali Bijani   +3 more
doaj  

Fracture resistance of implant- supported monolithic crowns cemented to zirconia hybrid-abutments: zirconia-based crowns vs. lithium disilicate crowns

The Journal of Advanced Prosthodontics, 2018
PURPOSE The aim of this in vitro study was to investigate the fracture resistance under chewing simulation of implant-supported posterior restorations (crowns cemented to hybrid-abutments) made of different all-ceramic materials.
Shareen H Elshiyab, Noor A Nawafleh, A. Öchsner, R. George   +3 more
semanticscholar   +1 more source

MET and NF2 alterations confer primary and early resistance to first‐line alectinib treatment in ALK‐positive non‐small‐cell lung cancer

Molecular Oncology, EarlyView.
Alectinib resistance in ALK+ NSCLC depends on treatment sequence and EML4‐ALK variants. Variant 1 exhibited off‐target resistance after first‐line treatment, while variant 3 and later lines favored on‐target mutations. Early resistance involved off‐target alterations, like MET and NF2, while on‐target mutations emerged with prolonged therapy.
Jie Hu, Ning Ding, Xiaobo Xu, Yedan Chen, Yong Zhang, Jingwen Liu, Jiebai Zhou, Hairong Bao, Donghui Zhang, Yijun Song, Yang Shao, Yuanlin Song   +11 more
wiley   +1 more source

Effect of margin design on fracture load of zirconia crowns

European Journal of Oral Sciences, 2018
Zirconia‐based restorations are showing an increase as the clinicians’ preferred choice at posterior sites because of the strength and esthetic properties of such restorations.
Anneli Skjold, Christian Schriwer, M. Øilo   +2 more
semanticscholar   +1 more source

Intraoral Drug Delivery: Bridging the Gap Between Academic Research and Industrial Innovations

Advanced Functional Materials, EarlyView.
Intraoral drug delivery offers a promising route for systemic and localized therapies, yet challenges such as enzymatic degradation, limited permeability, and microbial interactions hinder efficacy. This figure highlights innovative strategies—mucoadhesive materials, enzyme inhibitors, and permeation enhancers—to overcome these barriers.
Soheil Haddadzadegan, Simona Summonte, Fabrizio Ricci, Matthias Sandmeier, Andreas Bernkop‐Schnürch   +4 more
wiley   +1 more source